Thermal Imaging Cameras: Specific Terms

A closer look at thermal imaging cameras: what do all those specifications mean?

Are you looking for a thermal imaging camera, but can’t see the wood for the trees? Then you are not alone. Terms like NETD, pixel pitch , or FOV can seem quite technical at first glance. That is why we have listed the most important terms for you – clearly explained, so that you can make an informed choice.

Image sensor & optics: the heart of your viewer

Resolution determines how much detail the sensor can capture. The higher, the better the image quality.
Pixel pitch (expressed in μm) indicates how close the pixels are to each other. Smaller distances mean sharper images.
NETD measures the minimum temperature difference that is still noticed – the lower this value (e.g. <20 mK), the more sensitive your binoculars are.
Spectral range determines the wavelength range in which the sensor operates (typically 8–14 μm, infrared).
Lens: The larger the lens (e.g. F50/1.0), the more heat it captures – ideal for long distances.

Image and magnification: what exactly do you see?

Field of View (FOV): your field of view in degrees – a wider FOV is useful for overview, a narrower one for focus.
Magnification & Digital Zoom: in addition to the optical magnification, you can often zoom in digitally, up to 8x.
Eye relief & diopter correction provide comfort, especially for glasses wearers.

Display & ease of use

Most models are equipped with high-resolution AMOLED screens for a sharp and clear image, even in the dark.
Color palettes help interpret thermal images. Think of ‘white hot’, ‘black hot’, ‘red hot’, etc.

Smart features and connectivity

Photo & video storage: store images directly on the built-in memory (e.g. 64 GB).
PIP (Picture-in-Picture) and AI distance estimation help you focus and track better.
EIS (digital stabilization) prevents vibrations during observation.
Hotspot and app control allow live connection via smartphone.

Battery and protection

Most models have replaceable Li-ion batteries such as 18650s, good for 4 to 10 hours of use.
IP67 protection means dust and waterproof, essential in wet or harsh conditions.
Some models also feature a laser rangefinder up to 1000 meters, with ±1m accuracy.

In stock at HuntingEurope

At HuntingEurope you will find a wide range of thermal imaging cameras including:

Pulsar, Hikmicro, Nocpix, ThermTec, Zeiss, Liemke and Lahoux.

🔗 View the full range at:

https://huntingeurope.be/product-categorie/warmtebeeld-cameras/

Looking for personal advice?

Nickolay Smet is happy to visit your hunting group, WBE or association to give an extensive and accessible presentation about thermal imaging technology. Various models can also be tested by appointment!